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@(#)_exit.2 4.1 (Berkeley) 05/09/85

C 4 exit - terminate process

 exit(status)  int status; 

 _exit(status)  int status; 

Exit is the normal means of terminating a process. Exit closes all the process's files and notifies the parent process if it is executing a wait . The low-order 8 bits of status are available to the parent process.

This call can never return.

The C function exit may cause cleanup actions before the final `sys exit'. The function _exit circumvents all cleanup, and should be used to terminate a child process after a fork (2) or vfork (2) to avoid flushing buffered output twice.

fork(2), vfork(2), wait(2) (exit = 1.)

(status in r0)

sys exit